Alzheimer's disease is a biological condition in which memory function gradually breaks down

Which statement BEST summarizes the empirical research on the job characteristics model?

A) The theory is difficult to test, and therefore very few studies have been conducted. B) A recent meta-analysis suggests that the job characteristics model actually works in the opposite way from that theorized by Hackman and Oldham. C) A recent meta-analysis suggests that job characteristics have important influences on motivation, performance, and satisfaction. D) A recent review by the APA found that instituting suggestions from the job characteristics model would be highly unethical.

When children can use one object to stand for or represent another, they are said to be able to engage in

A) make-believe play. B) symbolic play. C) fantasy play. D) social play.